Table 7 Cluster analysis of unit-level accidents
From: A chemical accident cause text mining method based on improved accident triangle
Cluster No | The accident types | High-frequency keyword | Main causes of accidents |
|---|---|---|---|
0 | Production accident, environmental pollution accident | Hydrocarbon, flare, black smoke, reactor, pipeline, purge, blocking, flow, liquid level, decrease, locking | Pipeline blockage, device damage |
1 | Fire accident, production accident, mechanical injury accident, scald accident | Non-standard, leakage, fire, smoke, flame, interlocking, shutdown, damage, trip | The operations are not standardized, and protective measures are not taken |
2 | Production accident | Circuit, substation, transformer, cable, switch, trip, current, high, electric motor | Short circuit, equipment power loss, voltage fluctuation, power trip |
3 | Traffic accident | Collision, vehicle, carelessness, bus, knockdown, fracture, injury | Lack of safety awareness and failure to comply with traffic rules |
4 | Production accident | Reaction gas, compressor, temperature, pressure, vibration, differential pressure, liquid level, overtop, too fast, interlock, trip | Excessive temperature / pressure / liquid level / vibration fluctuation |